Method of and apparatus for rolling hollow metal bodies.



E. E. SLIG-K. METHOD OT AND APPARATUS TOR ROLLTNG HOLLOW METAL BOD'ILS. APPLICATION FILED 00T.15, 1909.

965,088. Patented July 19,1910. 4 SHEETS-SHEET 1` l @nQ o@ l 10 @o o@ @o [101 o@ @o @h `l u l D o n U11 o S 1:1 Q i111 Q i QO S1 N l l..

o nj! o 11iI ik '1 l I MAV HHH H1 E #if t i.. im f 1@- wr-m 1 11; A1 y\NITNES SES VENTOH Maha/w lq 'kamm E. E. SLIGK. METHOD OE AND APPARATUS EOE ROLLING HOLLOW METAL BODIES.

APPLICATION FILED 00T.15, 1909.

Patented July 19,1910.

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Nm mm mm im `E. E. SLIGK. A METHOD OI' AND APPARATUS POR ROLLING HOLLOW METAL BODIES. APPLICATION FILED O0T.15, 1909.

965,038, l y Patented Ju1y19,1910.

4 SHEETS-SHEET 3.

--Mam E. E. SLIGK. METEOD OE AND APPARATUS EOE EOLL1NG HOLLOW METAL BODIES.

APPLIGATION FILED 00T.15,1909.

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ISVENITOR WBTNESSES UNITED STATES PATENT OFFICE. EDWIN E. SLICKI, 0F PITTSBURG, PENNSYLVANIA. i v l `METHOD or Np Arrnmrus For. noLLING HOLLOW METAL norms.

965,038. specmwon @f1-.eters ram. Patented v.,r1'11y119, 1910.

Application led Uctober 15, Serial No. 522,730. 1

To all whom 'it may concern: preferably to the size of the periphery of Be it known that I, EDWIN E. SLIGK, of the article to be formed. The blanks may the city of Pittsburg in the county o f'Allebe finished, Y however, without being exgheny and State of lennsylvania, have inpanded to the same 'size as the openin or 60 vented a new vand useful Method of and Aprecess in the su porting die when desired. paratus for Rolling' Hollow Metal Bodies, The bottom sur ace 10 of theforming die of which the following is a full, clear, and 10 may be omitted and the die 10 formed exact description, reference being had to the of a hollow ring when desired. :e l accompan ing drawings, forming part 'of Opposite the shaft 3 and die 10 is -a 65 this speci cation. second shaft 11 which is 'mounted in the My invention relates to the rolling of holbearin 12, and which is also provided withl low metal bodies or metal bodies having a roller earings 13 and 14 and with a thrust cavity or opening therein, and it more parroller bearing 15 to take and transmit end ticularly relates to the rolling of annular thrust vfrom this shaft to the bearing l2. 70 metal tires used on locomotive wheels or T e bearing l2 and shaft 11 are mounted so built u car wheels both flanged and as to be transversely movable on the supwithout anges. aprt 16 and the support 16 is arran ed to The object of the invention is to provide moved longitudinally so as to a vance an improved method of rolling tires and and retract the shaft 11 endwise toward and 75 similar hollow bodies and to provide imaway from the die 10. proved apparatus for carrying out the roll- The shaft 11 -is provided with a flange 17 mg operation in making such articles by on which. a stub ormmg or `reducing roll my improved method. 18 is removably secured, the outer end of Figure l isa plan part-ly in section of the roll 18 when 1n use bemg in proximity 80 metal rolling-apparatus constructed inacto the bottom ofthe forming openin or cordance with my invention and arran ed recess in the su porting die 10. mounte on for rolling steel or other metal tires. Ii the end of the s aft 3, when the die is pro- 2 is a longitudinal side4 elevation, partly 1n vided withv such bottom surface. section, of the same. Fig. 3 is a sectional As shown a motor 19 is mounted-upon the 85 end elevation on the line III-III of Fig. support 16 so as to move with this support l. Fig. 4 is a detail sectional side elevation and the shaft 11, the motorbein connected showing the supporting die and forming by slow-down gearin 20 lwith te shaft l1 roll employed in carrying outmy invention so as vto rotate this s aft and the stub roll and forming part of my improved appa- 18 on its end when the motor 19 `is actuated. 90 ratus, Figs. 3 and 4 being on a larger scale. Engaging by one end with the support or Fig. 5 is a transverse section on the line carriage 16 is a piston 21 which reciprocates V-V of Fig. 1 showing the bearing support in .the hydraulic cylinder 21* mounted on and its con ections to the pull back cyllnder. the base 2 to move' the carriage 16 and the In the liawings 2 represents the base of roll 18 on the end of the Shaft 11 toward 95 my improved apparatus having a rotary die and away from the die 10. v shaft 3 mounted in the bearing 4. Prefer- A second piston 22 is `connected by. the ably roller bearingsl5 and 6 are'provided cross-head 23 and rods 24 to the carria for this shaft and a roller bearing 7 is also and, with the pull back c linder 25 in which shown employed to transmit end thrust this piston reciprocates', orms means for re- 100 from the die shaft 3 to the bearing 4. The tractlng the carriage 16 onv its ysupport and shaft 3 is provided with a wabbler 8 which moving theforming roll 18'` longitudinally is connected b a spindle and coupling on its axis'away from theforming die.

xes to any sultable type of driving motor Mounted on the longitudinally movable the motor and spindle not forming part of support 16l is a cylinder 26 havin a pis- 105 this invention not being shown. Removably ton 27 by which the carrier 12 with lts shaft' secured on the ang'e 9 on one end of the 11 and the forming roll 18 is movedtransshaft 3 is a forming die 10 having a forming versely on tlie su port'16 in one direction, orshaping opening or recess therein in a pull back cylin 'er 28 and lunger on the which the blank A is forged to shape, the end ofthe rod 29 being provi ed to move the 110..

surrounding wall of this opening or recess carrler in the opposite direction. being formed into the desired contour and In making annular or recessed bodies with l' v 50 Medial-.ations in myimproved apparatus, a blank of the required size and weight is firstformed by casting or otherwise. The blank is placed in position within the. opening in the supporting die 10, and the forming roll 18 is then moved longitudinally so as to pierce the blank and project into the hole or opening so formed in the blank and is moved transversely so as to brin the hollow blank in contact, on its opposite sides with the roll and with the forming face of the opening in the forming die and hold the blank within the openin The die 10 andthe roll 18 are then cause to rotate or a further rotation ofthe die and roll is eected. and, by means of thel cylinder 26 and piston 27 the roll 18 is pressed sidewise away from the axial center of the-die 10 on the shaft 3.

The hollow blank is increased in diameter in this manner and is forced outwardly with its peripheral vface in contact with the forming face of the hollow die. As the blank increases in diameter it gradually comes in contact at successively greater ortions of its periphery with the engaging aces of the die and when thel rolling operation `is continued for a suiiicient time is finally expanded to the same diameter as the opening or recess in the die. When this result is reached the blank will have been formed into the desired 'shape and cross-sectional contour and the forming operation will then be completed. Instead of forming the hole or recess in the blank by means of the forming roll 18 the blank may be punched before being putin position in the hollow die 10 or maybe formed by casting when desired, although I prefer to punch the openin in the blank while in the hollow die 10. gIhe above operations are then 'repeated upon successive blanks in carrying out my 1mproved method.

The advantages of my invention are many alilid will be appreciated by 'those skilled in t e art.

The apparat s is simple and is easily kept in repair. By its use the metal bodies arel easily and quickly formed-,into the desired size and contour. p. the construction and arrangement of the parts may out departing from my invention.

The forming die may forming roll stationary, or both the roll and die may be moved in carryin ing o eration. Either the may e positively rotated or Aboth may be driven -as desired. The roll may positively e move in an eccentric path relative to the die or vice-versa ineiecting the forging of the blanks, instead yofrot-ating. The construction of the mechanism for causing a relative approach of the vdie and forming roll may be varied and other changes may be 5 made.

has been expanded to recess i-n the supporting die,

be movable and* l die and forming roll, and thereby ex landing be made withi in sai tially While the drawings show a blank which the'same size as the the blanks may be .formed without increasing their width or diameter to that of the recess in the supporting die..

1. The method of forging hollow metal bodies, consisting in holding a hollow blank within a recessed supporting die, applying forging pressure to one side of the opening in said blank while causing a relative rotary movement of said die and roll and thereby expanding the blank within said die; substantially as described.

2. The method of forging hollow metal bodies, consisting in holding a hollowblank within a recessedsupporting die, applying forging pressure to one side of the opening in said blank while rotating the supporting die and thereby expanding the blank within the cavity in said die and causing the periphery of the blank to-assume the contour of the marginal surface of the cavity in said die; substantially as described.

3. The method of forging metal, consisting in holding a pierced blank within a recessed supporting die, inserting a forming -roll within the opening in said blank and causing a relative movement of said roll and the mar inal surface of the recess or opening in sai die while rotating the die and there y expanding the blank; substantially as described. 4

4. The method of forging metal consisting in holding a blank within a die recess,

forming an opening within the blank by forcing a forming roll into said blank when within the die recess and then causing a relative movement of the roll and the wall of the recess, the relative movement being transverse to the roll axis while subjecting the blank to a rollin action between the die and roll; substantia ly as described.

5. The method of forging hollow metal bodies, consisting in holding a hollow blank within a recessed supporting die, applying forging pressure to one side of the opening in said blank while rotating the supporting the blank within the recess in said ie; substantially as described.

6. The method of forging hollow metal bodies, consisting in holdlng a hollow blank out the for within a recessed supporting die, applying ieor the rol i forging pressure to one side of the opening b ank whih` rotating the supporting die and forming roll, and thereby expandin 1 the blank within the recess in said die and causing the peripheryl of the blank to aslf sume the contour of mar inal surface of the recess or ,o ening in sai as descri ed.

7. Apparatus for forgin ing a recessed supporting die; substanmetal, compris- 11e, means for ro- 1 acercas a' roll in the forging operation, means for causing endwise approach of said shafts, means for causing a relative sidewise movement of the shafts, and means for rotating at least one of the shafts during the rolling operation; substantially as described.

13. Apparatus for forging, comprising opposing shafts, carriers for the shafts, a* 55 forming roll detachably mounted on one of the shafts, a detachable die for supporting the blank on the opposite shaft co-acting with said forming roll in the forging operation, means for relatively movin said carlriers to cause endwise approac of the shafts, means for moving the carriers to cause a relative sidewise movement of the shafts, and means for rotating at least one of said shafts; substantially as described.

14. In apparatus for forging, opposing rotary shafts having flanged ends a formin roll detachably secured on the ianged end of one shaft, a recessed supporting die detachably secured on the end of the opposing shaft arranged to co-act with the roll in the forging operation, mechanism for rotating said shafts, and means for causing a relative endwise and sidewise movement of said die and rollin forging the blank; substantially as described.

15. vThe method of forging metal 'consisting in holding a blank within a recessed supporting die, piercing the blank by forcinv the forming roll thereinto While supporte 8o in said recess and then causing a relative movement of said roll and the marginal surface of the recess ina direction transversely of the axes thereof while rotating the forming roll and thereby expanding the blank a5 into the desired shape; substantially as described.

in testimony whereof, I have hereunto set my hand..

tating the die, a forming roll, means for causing endwise approach of said die and roll, and means for causing a relative transverse movement of the die and roll durin a the orging operation; substantially as described.

8. Apparatus for forgin metal, comprising a recessed supporting ie, means for rotating the die, a lforming roll,` means for io causing endvvise approach of said die and roll, and means for rotating the die and roll;

substantially as described. v

9. Apparatus for forging metal having opposing rotary shafts,.a recessed forming i5 die on one of said shafts, a forming roll on the opposing shaft co-acting with said die in the forging operation, means forcausing a relative en'dvvise and sidevvise approach of the shafts, and means for rotating at least 2o one of said shafts; substantially' as described.

l0. Apparatus for forging having opposing shafts, a recessed supporting die on one of said shafts, a forming roll on the oppos- 25 ing shaft co-acting With`said recessed die in the forging operation, means for causing a relative endwise and sidewise approach of the shafts, and means for causin5 a relative rotary movement of said die an roll; sub- 3o stantially as described.

11. Apparatus for forging, comprising opposing rotary shafts, a recessed forming die on one of said shafts, a stub formin roll on the opposite shaft co-acting With sai recessed die in the forging operation, means vfor causing relative endwise approach ofA said shafts, means for rotating at least one of said shafts, and means for causing a relative transverse movement ofthe shafts durtti ing the forging operation; substantially as described.

12. Apparatus for forging, comprising opposing shafts, carriers for the shafts, a

EDWIN n. stron.

45 the shafts, a detachable die for supporting Witnesses: a

the blank on the opposite shaft, said die R. D.-LITfrLE, having a recess coacting with the forming H. M. CoRWIN. 

